AFAIK it's specifically google play services that enforces it, if you don't have that on the phone then you're fine.
that's unfortunately not what my experience has been, but then i also have like 10 apps with constant background services that i don't want to live without.. That said, the battery life is still perfectly fine IMO.
you don't even need to do it yourself, there are places who will repair batteries for you.
eeeeeh i found that to be really quite amazingly boring, you literally just queue some actions and wait for hours...
Here's the install guide, basically identical for all pixels afaik: https://wiki.lineageos.org/devices/shiba/install/
It's come a long way from the cyanogenmod days.
the thing about pixels is that putting lineage/graphene/whatever on them basically turns it into a completely different phone, all the complaints about AI and whatnot largely dissapear and they become what i'd call about the best experience you can have on a smartphone. Easy to install lineage (dunno about others, presume it's equally easy), just works, no bullshit.
the #1 reason it's what i've been using is just that they don't have any locked down nonsense compared to other brands, unlocking the bootloader and flashing another OS is absolutely trivial and stuff just works.
you can get around a lot of detection with stuff like microg/kernelsu and other layers of arcane bullshit technomagic
"what's between your legs?"
- "both your parents, fighting over who goes first"
it does go to Oulu which is a reasonably large city, and having it now go directly to Haparanda station means connections to swedish trains are easier, so i'd wager it'll see reasonable ridership just for connections between Oulu and Luleå for example.
Even more basic: Why are people just taking this? Why do so few people care?